There aren't many who've reached three years without interruption. I'm sure you can count them on two hands, if not one.

[Albert, for one. Sheena... Kratos reached three years before he was sent home. Raine must be nearing three years as well. There was that Stella girl, but she may have been sent home before the three year mark. Yuan has no clue when she arrived, he just knows she gave birth to a kid a few months after he first came to Luceti. If Usagi were still around, she'd have reached her three year mark soon as well. That's about all the people coming to mind, but he can't claim to know all of the population.]